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Phase Equilibrium Measurements of Sacha Inchi Oil (Plukenetia volubilis) and CO2 at High Pressures

  • Original Paper
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Journal of the American Oil Chemists' Society

Abstract

New data on phase equilibria for Sacha inchi seed oil in carbon dioxide have been measured using a variable volume cell phase equilibria system at temperatures of 303, 313 and 323 K and at pressures ranging from 4.3 to 27.7 MPa. The CO2 mole fraction varied from 0.7488 to 0.9997. At the studied concentrations, phase transitions of vapor-liquid, liquid-liquid-vapor and liquid-liquid were observed. Sacha inchi oil contains 47% of omega-3 fatty acids, with a ratio of 0.76:1 for omega-6:omega-3, which is good for human health. The Peng-Robinson equation of state was used to describe the experimental data. A qualitative agreement was obtained between experimental and calculated data for the binary system CO2 and Sacha inchi seed oil.

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Acknowledgment

The authors are grateful to Natural Science and Engineering Research Council of Canada (NSERC) for financial support of this project and CAPES/PROCAD-NF.

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Authors and Affiliations

  1. Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada

    Ivor M. do Prado, Víctor H. Alvarez, Sócrates Quispe-Condori & Marleny D. A. Saldaña

  2. Department of Chemical Engineering, Universidade Estadual de Maringá, CEP 87020/900, Maringá, Paraná, Brazil

    Willyan M. Giufrida, Vladimir F. Cabral & Lucio Cardozo-Filho

Authors
  1. Ivor M. do Prado
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  2. Willyan M. Giufrida
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  3. Víctor H. Alvarez
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  4. Vladimir F. Cabral
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  5. Sócrates Quispe-Condori
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  6. Marleny D. A. Saldaña
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  7. Lucio Cardozo-Filho
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Corresponding author

Correspondence to Marleny D. A. Saldaña.

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do Prado, I.M., Giufrida, W.M., Alvarez, V.H. et al. Phase Equilibrium Measurements of Sacha Inchi Oil (Plukenetia volubilis) and CO2 at High Pressures. J Am Oil Chem Soc 88, 1263–1269 (2011). https://doi.org/10.1007/s11746-011-1786-z

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  • DOI: https://doi.org/10.1007/s11746-011-1786-z

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